import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/components/login.vue'
import Home from '@/components/Home.vue'
import Welcome from '@/components/Welcome.vue'
import Users from '@/components/user/Users.vue'
Vue.use(Router)

const router = new Router({
  routes: [
    {
      path: '/',
      redirect: '/login'
    },
    { path: '/login', component: Login },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [{ path: '/welcome', component: Welcome }, { path: '/users', component: Users }]
    }
  ]
})
// 路由导航守卫
router.beforeEach((to, from, next) => {
  // 如果访问的是login直接放行
  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = sessionStorage.getItem('token')
  // 如果token存在直接放行
  if (tokenStr) return next()
  // 不存在则强制跳转到登录页
  next('/login')
})

// 暴露
export default router
